Seeing higher latency with Lagopus in 64bit mode compared to 32bit

[kapiladhikesavalu]

Issue Type

• Bug report

Summary

Seeing higher latency with lagopus when using in 64 bit mode. We are seeing latency values around 4 times more when using 64bit lagopus vs 32bit lagopus.

1. What is the typical latency expected from lagopus switch ?
2. Also, is there any configurations that can be tried to improve the latency?
3. There are some ring and burst custom options, will that help?
   --hashtype TYPE: Select hash type for flow cache
   city64 CityHash(64bit) (default)
   intel64 Intel_hash64
   --fifoness MODE: Select FIFOness mode, MODE is one of none, port, or flow
   flow : FIFOness per each flow (default.)
   port : FIFOness per each port.

dsl config used:
channel channel01 create -dst-addr 127.0.0.1 -protocol tcp
controller controller01 create -channel channel01 -role equal -connection-type main
interface interface01 create -type ethernet-dpdk-phy -device "net_pcap0,iface=veth1"
interface interface02 create -type ethernet-dpdk-phy -device "net_pcap1,iface=veth5"
interface interface03 create -type ethernet-dpdk-phy -device "net_pcap2,iface=veth7"
port port300 create -interface interface01
port port301 create -interface interface02
port port302 create -interface interface03
bridge br-switch create -controller controller01 -port port300 300 -port port301 301 -port port302 302 -dpid 0x1

Bug report

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Expected behavior

Expected lower latency
(What you should see instead)

Actual behavior

higher latency in the range of ms.
(What actually happens)

Environment

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Steps to reproduce

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Relevant logs

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logs, and code as it's very hard to read otherwise.)

(Sample)

Component

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Possible fixes

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Feature proposal

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Proposal

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Component

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Links / reference

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